Excellent Sony MP3 NWZ-B183F Protable Music Player 4GB Walkman USB MP3 Player
🎧 Sony NWZ -B183F Walkman 4GB MP3 Player with FM Radio. Sony NWZ-B183F Walkman main unit. Storage: 4GB (non-expandable). Built-in USB 2.0 plug for easy charging & file transfer. Battery Life: Up to 20 hours (MP3 playback).